Fiber-optic angular rates sensor having enhanced reliability

Details Fiber-optic angular rates sensor having enhanced reliability Fiber-optic angular rates sensor having enhanced reliability

1987-02-24

1988-11-22

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01B 902, G01C 1964

Patent

active

047861720

ABSTRACT:
A fiber-optic angular rate sensor having enhanced reliability is disclosed, wherein counter-propagating light beams are directed through a multi-turn fiber-optic coil. The light beams are phase shifted relative to each other as the coil rotates to produce a phase difference which is detected to provide a measurement of the rotational rate of the coil. A redundant light source and detector arrangement are included to enhance the reliability of the device and to insure a reciprocal device without sacrificing accuracy.

REFERENCES:
patent: 4444503 (1984-04-01), Schiffner

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